In May 2014, Foster was promoted to Anchor/London Correspondent, retaining the royal brief but also heading-up all UK affairs. In August 2014, a British security source leaked intelligence to him about Russian military movements during the Ukraine crisis.[64] In September 2014, he fronted CNN's coverage of the independence referendum in Scotland[65] which included five hours of rolling coverage overnight on his own from the count. On 16 December 2014, he broke news of the 2014 Peshawar school massacre and anchored several hours of live coverage until the siege was over. A combative interview in January 2015 with Bobby Jindal about the existence of 'so-called no-go zones' in London[66] was widely picked up by US media.[67][68][69][70] In February 2015, he was on air reporting on the identification of Mohammed Emwazi (previously "Jihadi John") when a technical error brought up an image of Vladimir Putin.[71] In May 2015 he pioneered the use of the then new Periscope (app) in journalism during his coverage of the birth of Princess Charlotte of Cambridge.[72][73] The same month, he co-anchored CNN's 8-hour overnight UK election show with Hala Gorani.[74][75]